CN110229415A - Flame retardant grade continuous glass fiber reinforced polypropylene presoaks carrying material and preparation method thereof - Google Patents
Flame retardant grade continuous glass fiber reinforced polypropylene presoaks carrying material and preparation method thereof Download PDFInfo
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- CN110229415A CN110229415A CN201910446545.8A CN201910446545A CN110229415A CN 110229415 A CN110229415 A CN 110229415A CN 201910446545 A CN201910446545 A CN 201910446545A CN 110229415 A CN110229415 A CN 110229415A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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Abstract
The invention discloses a kind of flame retardant grade continuous glass fiber reinforced polypropylenes to presoak carrying material, and according to the mass fraction, raw material composition includes: 50 parts of polypropylene；70~150 parts of continuous glass fibre；Resistance to 40~50 parts of migration halogen-free flame retardants master batch；0~2 part of compatilizer；0.5~1.0 part of heat stabilizer；0~0.5 part of light stabilizer.It is based on 100% by gross mass, the raw material composition of the halogen-free flame retardants of the resistance to migration master batch includes: polipropene 25 %；Modified polyphosphate fire retardant 30%~35%；Phosphorus nitrogen halogen-free expansion fire retardant 30%~40%；Melamine polyphosphates 0~10%.The invention also discloses the preparation methods of flame retardant grade continuous glass fiber reinforced polypropylene preimpregnation carrying material, include: by the raw material in addition to continuous glass fibre after mixing, through single screw extrusion machine melting mixing, melt is through melt distribution device or casting mold, it conveys into impregnation mold, it is impregnated with continuous glass fibre, obtains the flame retardant grade continuous glass fiber reinforced polypropylene preimpregnation carrying material.
Description
Technical field
The present invention relates to technical field of polymer material processing, and in particular to a kind of flame retardant grade continuous glass fibre enhancing is poly-
Propylene presoaks carrying material and preparation method thereof.
Background technique
Continuous fiber reinforced thermoplastic composite material (CFRTP) is a kind of advanced composite material, and continuous fiber can be big
Width promotes every mechanical property of basis material, because its fibre length is long, performance is high, and can be with the long fiber reinforcement of same substrate
Thermoplastic material (LFT material) carries out mixed-forming, so that product is had many characteristics, such as Composite, functionalization, lightweight, gradually exists
It is applied in the fields such as automobile, machinery, chemical industry, building materials and military project.
The liner plate material of lorry, train, container etc. gradually requires have flame retarding function, and new-energy automobile requires exhausted
Most of material reaches certain flame retardant rating, and plastic building template also requires material to accord with because of the security risk of building site electric welding construction
Unify fixed flame-retardancy requirements.But most of fire proofing is not easy to be processed, poor mechanical property, shock resistance are low, is unable to reach i.e.
It can requirement that is fire-retardant and being able to satisfy engineer application.
Flame retardant grade continuous fiber reinforced thermoplastic preimpregnation carrying material combines continuous fiber on the basis of meeting fire-retardant
With the advantage of thermoplastic resin, not only there is ideal intensity and modulus, and there is excellent impact property and can return
The characteristics of utilizing is received, is a kind of ideal engineer application material.
Notification number is that the patent specification of CN102532681B discloses a kind of halogen-free expansion type flame-proof continuous fiber reinforcement
It is fire-retardant to play synergistic by ammonium polyphosphate, melamine, pentaerythrite compounding for PP composite material, but the system is in the presence of easy
The moisture absorption, moisture absorption, and the compounding of plurality of raw materials will lead to production and stablize hidden danger, meanwhile, composite material can go out after long-time is stored
Now infiltration, transport phenomena, cause the original flame retardant property of product to substantially reduce.
Notification number is that the patent specification of CN205467704U discloses a kind of fire-retardant preimpregnation of continuous fiber reinforced thermoplastic
Belt composite presoaks sheet layer using non-flame resistant continuous fiber reinforced thermoplastic and fire-retardant film layer combining form reaches fire-retardant
Effect, but this kind of mode only reaches flame retardant effect using fire-retardant film layer on surface layer, once fire-retardant film layer is worn, then fire-retardant mistake
Effect；In addition, the form is suitble to horizontal firing, flame is changed to the burning of vertical mode, then flame retardant effect is had a greatly reduced quality.
Summary of the invention
For shortcoming existing for this field, the present invention provides a kind of flame retardant grade continuous glass fiber reinforced polypropylenes
Carrying material is presoaked, the fire retardant of hyposmosis, resistance to migration, low precipitation has been used in raw material, there is good flame retardant effect.
A kind of flame retardant grade continuous glass fiber reinforced polypropylene preimpregnation carrying material, according to the mass fraction, raw material composition includes:
The polypropylene is high-flowability polypropylene (PP), and 230 DEG C of melt index are 50~120g/10min.Because of the present invention
The fiber content of prepared flame retardant grade continuous glass fiber reinforced polypropylene preimpregnation carrying material is higher, greater than 50wt%, and
The addition of fire retardant is so that melt viscosity increase, causes the resistance of melt infiltration fibre bundle to increase, so using High Flowability PP
Substrate can properly increase mobility, reduce osmotic resistance, facilitate fiber impregnation.
The continuous glass fibre is continuous roving, and glass fibre number is 600~2400Tex, and fibre single thread is straight
Diameter is 13~17 μm, it is preferred to use the processed glass type of PP emulsion pasting agent, raising glass fibre and melt polypropylene
Interface binding power and effect of impregnation make glass and acrylic resin have preferable pulling capacity.
It is based on 100% by gross mass, the raw material composition of the halogen-free flame retardants of the resistance to migration master batch includes:
By the compounding of above-mentioned material, not only solving composite material will appear after long-time is stored infiltration, migration
Phenomenon, also promotion flame retardant effect, and the processing temperature of fire retardant is made to be increased to 240 DEG C from original 220 DEG C.Processing temperature
Improve, the viscosity of melt polypropylene can be made to reduce mobility and increased, can more fully impregnated glass fiber, improve fire-retardant cascade
The mechanical property of continuous glass fiber reinforced polypropylene preimpregnation carrying material.
Effective flame retardant constituent content is high in the halogen-free flame retardants of the resistance to migration master batch, accounts for 75wt%.
In the raw material of the halogen-free flame retardants of the resistance to migration master batch, the polypropylene be high-flowability polypropylene, 230 DEG C
Melt index is 80~120g/10min.
The modification polyphosphate fire retardant, shown in structural formula such as formula (I):
Wherein, R1 is selected from CH3Or C6H5, n be 1~10000 integer, m be 1~100 integer, b be 1~500 it is whole
Number, M in melamine and its derivative, morpholine, piperidines, piperazine, alkyl hydroxyl polyamines, nitrogenous aerotex one
Kind is several, and R can be alkyl, preferably methyl or ethyl.
The modification polyphosphate fire retardant makes to realize friendship between flame retardant molecule through alkylsiloxane polymeric modification
Connection, improve the water resistance of fire retardant, especially the resistance to migration of high temperature and humidity condition and be precipitated performance, thermal weight loss 2wt%'s
Temperature is not less than 240 DEG C, JLS-APP 101R, the JLS-PNA of specific optional Hangzhou JLS Flame Retardants Chemical Co., Ltd.'s production.
The phosphorus nitrogen halogen-free expansion fire retardant is the non-ammonium polyphosphate fire retardant of micro- phosphorus, and average grain diameter is 50~80 μ
M, nitrogen content are 21wt%~23wt%, and phosphorus content is 18wt%~20wt%, and decomposition temperature is not less than 240 DEG C, can solve to hinder
Fire the problem of the resistance to mild hydrolytic resistance difference of agent, the non-polyphosphoric acids of specific optional Hangzhou JLS Flame Retardants Chemical Co., Ltd.'s production
The non-ammonium polyphosphate agent fire retardant for micro- phosphorus that ammonium fire retardant JLS-PNA220 series, Nantong Yi Te Chemical Co., Ltd. produce
MF83-PP01 product.
Melamine polyphosphates processing performance with higher, dispersibility, thermal stability, thermal weight loss 2wt%'s
Temperature is not less than 300 DEG C, is a kind of more excellent main flame retardant and auxiliary sex flame retardant, and specific optional Shandong generation Anhua work is limited
The MPP material of company's production, Sichuan Fine Chemical Research and Design Inst. save the MPP-A material of production.
The preparation method of the halogen-free flame retardants of the resistance to migration master batch includes:
Raw material outside dephosphorization nitrogen halogen-free expansion fire retardant is mixed in proportion, twin-screw is entered by main spout
In extruder, phosphorus nitrogen halogen-free expansion fire retardant is added by side spout, and each fire retardant is evenly dispersed and is coated by polypropylene,
Extruding pelletization obtains the halogen-free flame retardants of the resistance to migration master batch.
Each area's processing temperature of double screw extruder is set in 170~190 DEG C, using 200~300rpm of the slow-speed of revolution, with
Screw rod shearing bring fire retardant is reduced to decompose.
The compatilizer is selected from polypropylene-maleic anhydride graft (PP-g-MAH), the acrylic acid-grafted object (PP- of polypropylene-
G-MAA), at least one of polypropylene-methyl methacrylate-grafted object (PP-g-MMA).With maleic anhydride grafts, third
Olefin(e) acid graft etc. can be effectively improved the problem of Method of Polymer Compatibility difference, greatly change the polarity of polypropylene material,
Enhance the caking property of polymeric matrix and glass fibre.
The heat stabilizer in antioxidant 1010, irgasfos 168, antioxidant PS802, antioxidant DSTP at least one
Kind, to meet the long-term ageing requirement of product.
The light stabilizer in the low alkalinities hindered amine substance such as UV-770, HALS-944, HALS-855 at least
One kind meeting the weatherable requirement of product.
The present invention also provides the preparations of the flame retardant grade continuous glass fiber reinforced polypropylene preimpregnation carrying material described in one kind
Method, using melt impregnating process, comprising steps of
(1) polypropylene, resistance to migration halogen-free flame retardants master batch, compatilizer, heat stabilizer and light stabilizer are weighed, is mixed
Uniformly, mixture is obtained；
(2) mixture that step (1) obtains is added in single screw extrusion machine material bin, is melted through single screw extrusion machine
It is kneaded, melt is conveyed through melt distribution device or casting mold into impregnation mold；
(3) continuous glass fibre is drawn by creel unit, after tension-adjusting gear, exhibition silk device, preheating device, is drawn
Enter to the impregnation mold, impregnated with the melt, it is pre- to obtain the flame retardant grade continuous glass fiber reinforced polypropylene
Soak carrying material.
In step (2), the screw slenderness ratio of the single screw extrusion machine is 30:1, and single screw extrusion machine temperature sets 6th area altogether:
1 100~160 DEG C of area, 2 160~180 DEG C of areas, 3 170~190 DEG C of areas, 4 200~220 DEG C of areas, 5 200~220 DEG C of areas, 6 areas 200
~230 DEG C.
The temperature of the melt distribution device is 220 DEG C.
The heating temperature of the impregnation mold is 220~240 DEG C, and impregnation mold length is 0.5~1.0 meter, is protected with length
Demonstrate,prove dip time.Temperature is lower than 220 DEG C, and glass and melt polypropylene dipping effect are insufficient, and the performance of composite material is poor；Work as temperature
For degree more than 245 DEG C, fire retardant generates more decomposition, and the flame retardant effect of composite material reduces, and processing temperature is not to be exceeded 240 DEG C.
In step (3), the preheating device is infrared heating device, and heating temperature is 80~120 DEG C.
In step (3), glass by the effect of dip roll, tractive force, fiber pretension in impregnation mold, force by glass
Exhibition is fine in mold, and in the infiltration angle that multiple groups dip roll is formed to produce larger melt pressure poor for melt, so that resin melt
The fibre bundle being unfolded is permeated, to impregnate to glass.
Glass with after melt impregnation go out flat mouth mold wound after three-roller calendar, auxiliary traction machine by wrap-up.
The described flame retardant grade continuous glass fiber reinforced polypropylene preimpregnation carrying material with a thickness of 0.2~0.4mm, glass fibers
Dimension hplc is 40wt%~65wt%.
Test board is pressed into after the flame retardant grade continuous glass fiber reinforced polypropylene preimpregnation carrying material of preparation is carried out laying
Material, molding apparatus platen temperature are 180~200 DEG C, pressure 1.0MPa.
The oxygen index (OI) of the test plate of preparation can reach 38~45, and vertical combustion grade can reach UL94-V0 1.6mm.
Compared with prior art, the present invention major advantage includes:
1, lamination is interacted with non-flame resistant continuous fiber reinforced thermoplastic prepreg tape using fire-retardant film layer with the prior art
Method is compared, and the method for present invention melt impregnation directly prepares the continuous reinforced polypropylene preimpregnation carrying material of flame retardant grade, is guaranteed
The stability of laminated plate flame retardant property, reduces the bonding risk between different sheet materials, while improving laminated plate
Mechanical property.
2, compared with existing using the fire retardant of ammonium polyphosphate compounding, the present invention is used through alkylsiloxane polymeric modification
Polyphosphate fire retardant and the non-ammonium polyphosphate fire retardant of micro- phosphorus compounded, make the processing temperature of fire retardant improve to
240 DEG C, the dipping effect of glass fibre and melt is improved, the performance for both having improved material in turn ensures flame retardant effect, simultaneously
Fire retardant is solved in Problem of Failure such as the resistance to migrations and precipitation of high temperature and humidity condition.
3, the present invention by first using double screw extruder prepare high concentration of fire retardant master batch to each fire retardant of compounding into
The preliminary distributed rendering of row, carries out redistribution mixing to fire retardant using single screw extrusion machine afterwards, improves the mixing of fire retardant
Effect also reduces manufacturing cost in the form of master batch.
4, another of the invention clear superiority be with fire retardant processing temperature raising and migration, the solution of problem is precipitated
Certainly, it can prepare that glass fiber content is more than 60% and thin layer flame retardant grade continuous glass fiber reinforced polypropylene of the thickness in 0.20mm is pre-
Carrying material is soaked, has higher production level.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In the following examples, the experimental methods for specific conditions are not specified, usually according to conventional strip
Part, or according to the normal condition proposed by manufacturer.
As shown in table 1, unit is mass fraction to each component formula of Examples 1 to 4.
The each component formula of 1 Examples 1 to 4 of table, mass parts
Embodiment 1
By 10 parts of PP (the optional trade mark is SK BX3920), 12 parts of modified polyphosphate fire retardants, 2 parts of melamine polyphosphates
Salt is proportionally added into high-speed mixer and is uniformly mixed, entered in double screw extruder by main feeding, and 16 parts of phosphorus nitrogen Halogens are swollen
Swollen type fire retardant is added in Section 5 barrel by side feed material form, is can be uniformly dispersed each fire retardant and is wrapped by polypropylene
It covers, extruding pelletization obtains the resistance to migration halogen-free flame retardants master batch of high-content that effective fire retardant is 75%.
By the halogen-free flame retardants of the resistance to migration master batch of preparation and 50 parts of PP (the optional trade mark is SKHX3900), 1.0 parts of maleic acids
Acid anhydride graft polypropylene (PP-g-MAH), 0.3 part of antioxidant 1010,0.2 part of irgasfos 168,0.1 part of light stabilizer HALS-944,
It carries out being conveyed into after mixed on low speed is uniform through single screw extrusion machine melting in 0.1 part of ultraviolet absorber UV-770 merging mixing machine molten
Evenly into impregnation mold after body distributor, with 70 parts of E level fiberglass (preferably OWENS CORNING SE4805-
1200tex) converge in impregnation mold, glass in mold by dip roll, tractive force, fiber pretension under the action of, glass
Force to open up in mould fine, and in the infiltration angle that multiple groups dip roll is formed to produce larger melt pressure poor for melt, so that resin
The fibre bundle that melt infiltration is unfolded, to impregnate to glass, flat mouth mold is after three-roller calendar, auxiliary traction machine out
It is wound by wrap-up, flame retardant grade continuous glass fiber reinforced polypropylene prepreg tape is prepared into, with a thickness of 0.40mm.
Single screw extrusion machine temperature: 1 100~160 DEG C of area, 2 160~180 DEG C of areas, 3 170~190 DEG C of areas, 4 areas 200~
220 DEG C, the temperature in 5 200~220 DEG C of areas, 6 200~230 DEG C of areas, melt distribution device is 220 DEG C, and infrared heating device temperature is
80~120 DEG C, impregnation mold heating temperature is 220~240 DEG C.
Obtained flame retardant grade continuous fiber reinforced polypropylene prepreg tape is pressed into [0/90]nsThe orthogonal laying molding of symmetry is carried out,
200 DEG C of molding temperature, molding pressure control prepares test bars and is tested, test result is shown in Table 2 in 1.0MPa or so.
Embodiment 2
By 12 parts of PP (the optional trade mark is K7100), 13 parts of modified polyphosphate fire retardants, 4 parts of melamine polyphosphates, press
Ratio is added high-speed mixer and is uniformly mixed, and is entered in double screw extruder by main feeding, by 16 parts of phosphorus nitrogen halogen-free expansibles
Fire retardant is added in Section 5 barrel by side feed material form, is can be uniformly dispersed each fire retardant and is coated by polypropylene, is squeezed
It is granulated out and obtains the resistance to migration halogen-free flame retardants master batch of high-content that effective fire retardant is 75%.
By the halogen-free flame retardants of the resistance to migration master batch of preparation and 50 parts of PP (the optional trade mark is K7760), 2.0 parts of methacrylic acids
Graft polypropylene (PP-g-MAA), 0.3 part of antioxidant 1010,0.3 part of antioxidant PS802,0.2 part of light stabilizer HALS-944,
It carries out being conveyed into after mixed on low speed is uniform through single screw extrusion machine melting in 0.1 part of ultraviolet absorber UV-770 merging mixing machine molten
Evenly into impregnation mold after body distributor, (the optional trade mark is megalith 362c-1200tex) with 100 parts of E level fiberglass
Converge in impregnation mold, glass in mold by dip roll, tractive force, fiber pretension under the action of, glass force in mould
Interior exhibition is fine, and in the infiltration angle that multiple groups dip roll is formed to produce larger melt pressure poor for melt, so that resin melt infiltration
The fibre bundle being unfolded, to impregnate to glass, flat mouth mold is filled after three-roller calendar, auxiliary traction machine by winding out
Winding is set, flame retardant grade continuous glass fiber reinforced polypropylene prepreg tape is prepared into, with a thickness of 0.35mm.
Single screw extrusion machine temperature: 1 100~160 DEG C of area, 2 160~180 DEG C of areas, 3 170~190 DEG C of areas, 4 areas 200~
220 DEG C, the temperature in 5 200~220 DEG C of areas, 6 200~230 DEG C of areas, melt distribution device is 220 DEG C, and infrared heating device temperature is
80~120 DEG C, impregnation mold heating temperature is 220~240 DEG C.
Obtained flame retardant grade continuous fiber reinforced polypropylene prepreg tape is pressed into [0/90]nsCarry out the molding of symmetry laying, molding
200 DEG C of temperature, molding pressure control prepares test bars and is tested, test result is shown in Table 2 in 1.0MPa or so.
Embodiment 3
By 12.5 parts of PP (the optional trade mark be K7100), 15 parts of modified polyphosphate fire retardants, 5 parts of melamine polyphosphates,
It is proportionally added into high-speed mixer to be uniformly mixed, be entered in double screw extruder by main feeding, 17.5 parts of phosphorus nitrogen Halogens are swollen
Swollen type fire retardant is added in Section 5 barrel by side feed material form, is can be uniformly dispersed each fire retardant and is wrapped by polypropylene
It covers, extruding pelletization obtains the resistance to migration halogen-free flame retardants master batch of high-content that effective fire retardant is 75%.
By the halogen-free flame retardants of the resistance to migration master batch of preparation and 50 parts of PP (the optional trade mark is K8065), 2.0 parts of methacrylic acids
Methyl esters graft polypropylene (PP-g-MMA), 0.2 part of antioxidant 1010,0.1 part of irgasfos 168,0.2 part of antioxidant DSTP, 0.3 part
Melt after mixed on low speed is uniform through single screw extrusion machine in light stabilizer HALS-855 merging mixing machine and is conveyed into melt point
Evenly into impregnation mold after cloth device, soaked with 120 parts of E level fiberglass (the optional trade mark is megalith 362c-1200tex)
Converge in stain mold, glass in mold by dip roll, tractive force, fiber pretension under the action of, glass pressure opened up in mould
Fibre, and in the infiltration angle that multiple groups dip roll is formed to produce larger melt pressure poor for melt, so that resin melt infiltration is opened up
The fibre bundle opened, to impregnate to glass, flat mouth mold is received after three-roller calendar, auxiliary traction machine by wrap-up out
Volume, is prepared into flame retardant grade continuous glass fiber reinforced polypropylene prepreg tape, with a thickness of 0.30mm.
Single screw extrusion machine temperature: 1 100~160 DEG C of area, 2 160~180 DEG C of areas, 3 170~190 DEG C of areas, 4 areas 200~
220 DEG C, the temperature in 5 200~220 DEG C of areas, 6 200~230 DEG C of areas, melt distribution device is 220 DEG C, and infrared heating device temperature is
80-120 DEG C, impregnation mold heating temperature is 220~240 DEG C.
Obtained flame retardant grade continuous fiber reinforced polypropylene prepreg tape is pressed into [0/90]nsCarry out the molding of symmetry laying, molding
200 DEG C of temperature, molding pressure control prepares test bars and is tested, test result is shown in Table 2 in 1.0MPa or so.
Embodiment 4
By 12.5 parts of PP (the optional trade mark be K7100), 15 parts of modified polyphosphate fire retardants, 5 parts of melamine polyphosphates,
It is proportionally added into high-speed mixer to be uniformly mixed, be entered in double screw extruder by main feeding, by 20 parts of phosphorus nitrogen halogen-free expandables
Type fire retardant is added in Section 5 barrel by side feed material form, is can be uniformly dispersed each fire retardant and is coated by polypropylene,
Extruding pelletization obtains the resistance to migration halogen-free flame retardants master batch of high-content that effective fire retardant is 75%.
By the halogen-free flame retardants of the resistance to migration master batch of preparation and 50 parts of PP (the optional trade mark is BX3920), 2.0 parts of maleic anhydrides
Graft polypropylene (PP-g-MAH), 0.3 part of antioxidant 1010,0.3 part of irgasfos 168,0.3 part of antioxidant PS802,0.2 part of light
Stabilizer HALS-855,0.1 part of ultraviolet absorber UV-770 merging mixing machine is interior squeeze after mixed on low speed is uniform through single screw rod
Machine melting out is conveyed into after melt distribution device evenly into impregnation mold, and (the optional trade mark is with 150 parts of E level fiberglass
Megalith 362c-1200tex) converge in impregnation mold, glass in mold by dip roll, tractive force, fiber pretension work
Under, glass is forced to open up in mould fine, and in the infiltration angle that multiple groups dip roll is formed to produce larger melt pressure poor for melt,
So that resin melt permeates the fibre bundle being unfolded, to impregnate to glass, flat mouth mold is through three-roller calendar, auxiliary out
It is wound after dragger by wrap-up, is prepared into flame retardant grade continuous glass fiber reinforced polypropylene prepreg tape, with a thickness of
0.25mm。
Single screw extrusion machine temperature: 1 100~160 DEG C of area, 2 160~180 DEG C of areas, 3 170~190 DEG C of areas, 4 areas 200~
220 DEG C, the temperature in 5 200~220 DEG C of areas, 6 200~230 DEG C of areas, melt distribution device is 220 DEG C, and infrared heating device temperature is
80-120 DEG C, impregnation mold heating temperature is 220~240 DEG C.
Obtained flame retardant grade continuous fiber reinforced polypropylene prepreg tape is pressed into [0/90]nsCarry out the molding of symmetry laying, molding
200 DEG C of temperature, molding pressure control prepares test bars and is tested, test result is shown in Table 2 in 1.0MPa or so.
The mechanical experimental results for the test bars that 2 Examples 1 to 4 of table is prepared respectively
In addition, it should also be understood that, those skilled in the art can be to this hair after having read foregoing description content of the invention
Bright to make various changes or modifications, these equivalent forms also fall within the scope of the appended claims of the present application.
Claims (10)
1. a kind of flame retardant grade continuous glass fiber reinforced polypropylene presoaks carrying material, which is characterized in that according to the mass fraction, raw material
Composition includes:
2. flame retardant grade continuous glass fiber reinforced polypropylene according to claim 1 presoaks carrying material, which is characterized in that institute
Stating polypropylene is high-flowability polypropylene, and 230 DEG C of melt index are 50~120g/10min.
3. flame retardant grade continuous glass fiber reinforced polypropylene according to claim 1 presoaks carrying material, which is characterized in that institute
Stating continuous glass fibre is continuous roving, and glass fibre number is 600~2400Tex, and fiber filament diameter is 13~17 μ
m。
4. flame retardant grade continuous glass fiber reinforced polypropylene according to claim 1 presoaks carrying material, which is characterized in that press
Gross mass is 100% meter, and the raw material composition of the halogen-free flame retardants of the resistance to migration master batch includes:
5. flame retardant grade continuous glass fiber reinforced polypropylene according to claim 4 presoaks carrying material, which is characterized in that institute
In the raw material for the halogen-free flame retardants of the resistance to migration master batch stated, the polypropylene is high-flowability polypropylene, and 230 DEG C of melt index are
80~120g/10min.
6. flame retardant grade continuous glass fiber reinforced polypropylene according to claim 4 presoaks carrying material, which is characterized in that institute
Shown in the structural formula such as formula (I) for the modification polyphosphate fire retardant stated:
Wherein, R1 is selected from CH3Or C6H5, R is alkyl, and the integer that n is 1~10000, the integer that m is 1~100, b is 1~500
Integer, M is in melamine and its derivative, morpholine, piperidines, piperazine, alkyl hydroxyl polyamines, nitrogenous aerotex
It is one or more of.
7. flame retardant grade continuous glass fiber reinforced polypropylene according to claim 4 presoaks carrying material, which is characterized in that institute
The phosphorus nitrogen halogen-free expansion fire retardant stated is the non-ammonium polyphosphate fire retardant of micro- phosphorus, and average grain diameter is 50~80 μm, and nitrogen content is
21wt%~23wt%, phosphorus content are 18wt%~20wt%, and decomposition temperature is not less than 240 DEG C.
8. the flame retardant grade continuous glass fiber reinforced polypropylene according to claim 4~7 presoaks carrying material, feature exists
In the preparation method of the halogen-free flame retardants of the resistance to migration master batch includes: by the raw material outside dephosphorization nitrogen halogen-free expansion fire retardant
It mixes in proportion, is entered in double screw extruder by main spout, phosphorus nitrogen halogen-free expansion fire retardant passes through side feed material
Mouth is added, and each fire retardant is evenly dispersed and is coated by polypropylene, and extruding pelletization obtains the halogen-free flame retardants of the resistance to migration master batch.
9. flame retardant grade continuous glass fiber reinforced polypropylene according to claim 1 presoaks carrying material, which is characterized in that institute
Compatilizer is stated to connect selected from polypropylene-maleic anhydride graft, the acrylic acid-grafted object of polypropylene-, polypropylene-methyl methacrylate
At least one of branch object.
10. flame retardant grade continuous glass fiber reinforced polypropylene preimpregnation described in a kind of any claim according to claim 1~9
The preparation method of carrying material, comprising steps of
(1) polypropylene, resistance to migration halogen-free flame retardants master batch, compatilizer, heat stabilizer and light stabilizer are weighed, is mixed equal
It is even, obtain mixture；
(2) mixture that step (1) obtains is added in single screw extrusion machine material bin, is melted through single screw extrusion machine mixed
Refining, melt are conveyed through melt distribution device or casting mold into impregnation mold；
(3) continuous glass fibre is drawn by creel unit, after tension-adjusting gear, exhibition silk device, preheating device, is introduced to
The impregnation mold is impregnated with the melt, obtains the flame retardant grade continuous glass fiber reinforced polypropylene prepreg tape
Material.
Priority Applications (1)
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| CN110698757A (en) * | 2019-10-09 | 2020-01-17 | 中广核俊尔(浙江)新材料有限公司 | Continuous glass fiber reinforced polypropylene unidirectional prepreg tape material and preparation method and application thereof |
| CN110734604A (en) * | 2019-10-09 | 2020-01-31 | 中广核俊尔(浙江)新材料有限公司 | organic sheets and preparation method thereof |
| CN114369303A (en) * | 2021-12-08 | 2022-04-19 | 金发科技股份有限公司 | Halogen-free heat-insulation ablation-resistant flame-retardant polypropylene material and preparation and application thereof |
| CN115216087A (en) * | 2022-07-14 | 2022-10-21 | 中广核俊尔(浙江)新材料有限公司 | Preparation, forming method and application of novel low-thermal expansion coefficient and low-dielectric composite material |
| CN115216090A (en) * | 2022-08-25 | 2022-10-21 | 佛山市湘聚新材料有限公司 | Building template material and preparation method thereof |
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| CN110698757A (en) * | 2019-10-09 | 2020-01-17 | 中广核俊尔(浙江)新材料有限公司 | Continuous glass fiber reinforced polypropylene unidirectional prepreg tape material and preparation method and application thereof |
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| CN115216087A (en) * | 2022-07-14 | 2022-10-21 | 中广核俊尔(浙江)新材料有限公司 | Preparation, forming method and application of novel low-thermal expansion coefficient and low-dielectric composite material |
| CN115216090A (en) * | 2022-08-25 | 2022-10-21 | 佛山市湘聚新材料有限公司 | Building template material and preparation method thereof |
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